Washington RD over Carnegie Lake
PoorMercer County, New Jersey · 0.8 MI NW of US Rt 1 · Structure no. 1100037
- Built
- 1905
- 120 years old, rebuilt 1938
- Condition
- Poor
- inspected March 2023
- Type
- Arch - Deck
- Steel
- Length
- 395 ft
- 4 main spans
- Daily traffic
- 13,599
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Washington RD over Carnegie Lake is a steel arch - deck carrying Washington RD over Carnegie Lake in Mercer County, New Jersey. It was built in 1905 and reconstructed in 1938, so it is 120 years old, older than the New Jersey average of 58.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 13,599 vehicles a day, roughly 4% of them trucks, projected to reach 16,028 by 2043. The structure is 395 ft (120.4 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Washington RD over Carnegie Lake built?
It was built in 1905, making it 120 years old in 2025. It was reconstructed in 1938.
What condition is Washington RD over Carnegie Lake in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.
How much traffic does Washington RD over Carnegie Lake carry?
About 13,599 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Washington RD over Carnegie Lake?
The structure is 395 ft (120.4 m) long with a longest span of 101 ft (30.8 m) and a deck 52 ft wide.
Who owns Washington RD over Carnegie Lake?
It is owned by the County Highway Agency.